12 February 2020
- Last edited 12 February 2020
Two wrongs don't make a right.
Smaller elements are going to provide better simulation accuracy, or point out the presence of a singularity in the model. If the temperature keeps increasing with each reduction in element size, then that is evidence of a singularity in the model and you have to fix that before you can use the maximum temperature in the model as a useful output.
If there is no singularity, then other boundary conditions or material properties are incorrect and don't represent the experimental conditions accurately. Those have to be changed to get better agreement with the experimental result.